Potter Stewart

“ Whatever restrictions the requirements of a charge may be thought to place upon subsequent proceedings by the Board, we can find no warrant in the language or purposes of the Act for saying that it precludes the Board from dealing adequately with unfair labor practices which are related to those alleged in the charge and which grow out of them while the proceeding is pending before the Board. The violations alleged in the complaint and found by the Board were but a prolongation of the attempt to form the company union and to secure the contracts alleged in the charge. ”

“ The National Labor Relations Act makes it an unfair labor practice for an employer to refuse to bargain in good faith with the representative of his employees. [1] The question presented by this case is the extent to which the Labor Board may, in formulating a complaint and in finding a violation of this section of the Act, take cognizance of events occurring subsequent to the filing of the charge upon which the complaint is based. ”

“ Once its jurisdiction is invoked the Board must be left free to make full inquiry under its broad investigatory power [8] in order properly to discharge the duty of protecting public rights which Congress has imposed upon it. There can be no justification for confining such an inquiry to the precise particularizations of a charge. For these reasons we adhere to the views expressed in National Licorice Co. v. National Labor Relations Board. ”